Pfarrwaller



Jan. 23, 1951 E, PFARRWALLER 2,538,798

RECEIVING AND RETURN MECHANISM FOR SPOOLLESS SHUTTLES IN LOOMS FOR WEAVING 4 Sheets-Sheet l /68 Tlcl. 77

Filed Aug. 19, 1948 2,538,798 RECEIVING AND RETURN MECHANISM FOR sPooLLEss Jan. 2 3, 1951 E PFARRWALLER sHUTTLEs 1N Looms RoR wEAvING 4 Sheets-Sheet 2 Filed Aug. 19, 1948 Jan. 23, 1951 E. PFARRWALLER 2,533,798

RECEIVING AND RETURN MECHANISM FOR SPOOLLESS SHUTTLES IN LOOMS FOR WEAVING Filed Aug. 19, 1948 4 Sheets-Sheet 3 9 INVENTOR.-

:RW/N PFA @R14/ALLER #Y M. L

' A TTOR/VE Jan. 23, 1951 E. PFARRWALLER 2,538,798

' RECEIVING AND RETURN MEcHANIsM FoR sPooLLEss SHUTTLES 1N LooMs FoR wEAvING Filed Aug'. 19, 1948 .4 Sheets-Sheet 4 A INVENTOR [/Pw//v PfA/PRWALLER.

BY l ATTORNEY Patented 23, i951 RECEIVING AD RETURN MECHANISM FOR SPOOLLESS SHUTTLES IN LOOMS FOR WEAvrNG Erwin P/farrwailer, Winterthur, Switzerland, assignor/to Sulzer Freres, Societe Anonyme, Winterth Switzerland, a corporation of Switzerland Application August 19, 1948, Serial No.- 45,178

In Switzerland August 20, 1947 33 Claims. (Cl. 139-125) The present invention relates to improvements in looms for weaving of the type having gripper shuttles which do not carry thread spools and which are picked by a picking mechanism through the shed to a shuttle receiving or trap mechanism wherefrom they are returned to the picking side of the loom on a return conveyor, more particularly to a mechanism and means for positively moving theshuttles in and from the shuttle trap to a return conveyor. l

An object of the invention is the provision of a mechanism, in looms for weaving of the spoolless shuttle type, for catching and braking the shuttles after they have pulled a weft thread through the shed, for checking Whether a shuttle has arrived in the trap at the proper time` for returning the shuttles to a predetermined position within the shuttle trap which position is always the same no matter where the shuttles come to a standstill within the trap, for fixing a shuttle in said position, opening the thread grippers of the shuttle while it is in the aforementioned position, and for pushing the shuttles laterally from said position out of the trap and transferring them to the return conveyor.

A further object of the invention is the provision, in a loom for weaving having spoolless shuttles with weft thread grippers, of a shuttle brake and trap mechanism including means for checking the arrival of the shuttles in the trap, for positioning the shuttles in the trap after they have come to a standstill, for opening the thread grippers of the shuttles, for releasing the weft thread after the shuttles have been positioned in the trap, for removing the shuttles laterally from the trap, and for correctly placing them on the return conveyor whereby operation of the shuttle brakes and of all of the other aforesaid movements is derived from cam means disposed on a common shaft which is rotated by the general loom drive.

Another object of the present invention is the provision, in a loom for weaving, of a brake and trap mechanism for spoolless shuttles after they have inserted a weft thread in the shed including control means individually associated with individual means for actuating the brakes, a shuttle arrival check, a shuttle positioner in the trap, an opener for the gripper on the shuttles holding a weft thread, pusher means for removing, laterally, the shuttles from the trap, shuttle transfer means for transferring the shuttles from the trap to the return conveyor, and shuttle transfer locking and placer means for locking the passage of the shuttles from the trap to the conveyor and placing the shuttles correctly on the latter, said control means being adapted to stop the weaving machine upon an improper condition of any of said actuated means.

An object of the invention is the provision, in a, loom for Weaving of the spoolless shuttle type, of a shuttle trap mechanism including shuttle brake means, shuttle arrival check means, shuttle. positioning means, opening means for grippers on the shuttles holding a weft thread, transfer means for transferring the shuttles from the trap to a return conveyor, of individual operating means for said means which operating means include individually a cam actuated two arm lever and a connecting rod connecting said lever and one of said means, the fulcrums of said two arm levers being displaceable against a resilient resistance and being displaced by the action of the cams when displacement of said connecting rods is impossible due to an improper operating condition of one of said means.

An object of the present invention is the provision, in a loom for weaving, of a shuttle brake having exchangeable brake elements and means for adjusting the brake pressure.

Another object of the invention is the provision, in a loom for weaving, of a positively actuated shuttle brake having a stationary portion and a brake portion connected by a toggle which is 1 extended when the brake is in position for braking on varriving of a shuttle and which is collapsed for releasing the brake from the shuttle.

Further and other objects of the present invention Will be hereinafter set forth in the accompanying specification and claims and shown in the drawings, which by Way of illustration show what I now consider to be preferred embodiments of the invention.

In the drawings:

Fig. 1 is a diagrammatic view of the cloth beam side of a loom according to the invention;

Fig. 2 is a top view with parts broken off of the shuttle receiving mechanism according to the invention; y

Fig. 3 is a transverse sectional view of the shuttle receiving and braking mechanism as well as of the mechanism for transferring the shuttles therefrom to the shuttle return track;

Fig. 4 is another transverse sectional view of a portion of the mechanism shown in Figs. 2 and 3;

Fig. 5 is a further transverse sectionalview of the mechanism illustrated in Figs. 2 and 3 and showing the operation of the shuttle removing means and the shuttle fixing pin;

Fig. 6 is a transverse sectional view of the 3 'mechanism according to Figs. 2 and 3, showing, in particular, the drive of the shuttle push out means and shuttle push out and locking lever;

Fig. '1 is a longitudinal sectional view along the axis of the shuttle picking path, of the mechanisms illustrated in Figs. 2 to 5; l

Fig. 8 is a longitudinal view of a portion of the shuttle return conveyor according to the invention;

Figs. 9 to 11 illustrate several phases of operation of the shuttle transfer mechanism according to the invention;

Figs. 12 and 13 illustrate two different phases of operation of a simplified shuttle transfer mechanism;

i Fig. 14 is a sectional view along the axis of a modified shuttle transfer track and of shuttle transfer means;

Fig. 15 illustrates a portion of the shuttle push out lever and lock as used in the modification shown in Fig. 14; Y

Figs. 16 and 1'1 illustrate the mechanism for operating the means shown in Figs. 14 and 15.

Figs. 18-20 illustrate the transfer means comprising guiding plates or sheets.

Like parts are designated by like numerals in all figures of the drawings.

Referring more particularly to Fig. 1, the loom drive is positioned in casing from where all elements are operated, such as the warp beam 2 with warp 3 and the cloth beam 5 with the fabric 4. The picking mechanism in casing 1 and the shuttle receiving or catch mechanism in casing 8 are driven by the main shaft 6 having a hand wheel l5. In casing 1 the weft thread I0 is connected to shuttle I4, which thread is unwound from weft spool |I, and is picked through the shed to the catch mechanism in casing 8. The shuttle |4 is returned in the return conveyor 9 beneath the warp from the catch mechanism or trap 8 to the picking mechanism. The main drive shaft is connected and disconnected with the loom drive by a mechanism |2 which is not shown as it does not form part of the present invention. The shafts for the heddles are desig. nated by numeral I3. V

As seen in Fig. 2 cam discs |9 to 24 and a cam drum are keyed to a secondary shaft |8 which is driven by the main shaft 6.

Roller 21, Fig. 3, disposed at one end of double lever 28 is guided in groove 26 of the cam disc |9. Rod 46 is linked to the other end of the double lever 28 by bolt 81. The double lever 28 swings about pivot 29 which is stationary at normal operation of the weaving machine.

Pivot 29 is positioned in a slide member 30 which is held to abutment 32 by a spring 3|.

A ball 34 resting on top of rod 35 protrudes into a recess 33 of the slide member 30. This rod slides in guides 36 and 31 provided in the shuttle catch mechanism box 8 and rests with its bottom end on one arm of angular piece 38 which is rotatable on shaft 39. The ends of shaft 39 are supported by the side walls |6 and I1 of the catch mechanism box 8. The other arm of member 38 is abutted by one end of horizontal rod 40 which is guided in stationary guides 4| and 42 and abutts with its other end an angular member 43. The angular member 43 is rmly connected with control rod 44.

The end 41 of the rod 46, Fig. 4, is guided in eye 49 of shuttle catch check rod 48, Fig. '7. The check rod or feeler 48 is guided by stationary plate 50 and the stationary catch mechanism element 5| and is pressed by spring 62 downwards to the end 41 of the rod 43.

Roller 54, Fig. 3, mounted on one end of two arm lever 55 is guided by groove 58 of cam disc 20. One end of rod 51 is pivoted by pivot 86 to the other end of lever 55 and is pivoted with its hers end to centre pivot 53 of a toggle joint Pivot 60 of lever 55 is mounted to slide member 6| which is held against abutment 62 of the catch box casing 8 by spring 3|. A ball 64 lies in recess 63 of the slide member 6| and rests on top of rod 65 which is guided in bearings 66 and 61 of the catch mechanism frame. The lower end of rod 65 rests on the angular member 43.

The toggle joint 58, 59 forms part of the shuttle brake assembly 68, Figs. 3 and '1, and connects brake element 69 with a threaded member 10. Exchangeable brake plates 1I are held between brake plate holders 13 which are bolted to brake element 69 by bolt 12. These brake plates may consist of metal, oil-proof rubber or a synthetic or natural material which is suitable as brake material. Member 10 is screwed with its threaded trunk 16 in nut member 14 which is rotatable in plate 50 and whose top end 11 has the configuration of a conventional nut.

A roller at one end of two arm lever 18, Fig. 5, engages groove 19 of cam disc 2|. The fulcrum 29 of lever 18 is supported by a slide member 30' in the same way as is lever 28 by member 30, Fig. 3. Shaft 82, Fig. 2, is rotatably supported by frame portion 5| and has an arm 8| attached.

to it which is pivoted to rod 80. Rotation of shaft 82 causes cog wheel segment 83 4to move catch pin 85 which is slidable in frame portion 5|, up or down by actuating a rack 84 at the upper part of pin 85, Figs. 5 and '1.

'I'he lower end of two arm lever 88 is oscillated by engagement of groove 89 in cam disc 22.

. Pivot 60 of lever 88 is supported by slide member 6| similarly to the support of lever 55, Fig. 3. One end of rod 90 is articulated by a bolt 86 to the upper end of lever 88; its other end is pivoted to lever 9|, Fig. 5, which swings with shaft 93. This shaft is supported in bearings 94', 95 provided on the side walls I6, |1 of the catch mechanism box 8, Fig.. 2. There is another lever 92, similar to 9|, connected with shaft 93. The lower ends of levers 9| and 92 are constructed as cog-wheel segments 96 which engage individually a rack 91 provided on the shuttle push out rods 99 and 98, respectively. Rods 98, 99 are slidable in guide |08 of Ythe shuttle receiving mechanism casing 8 and guide |0| of the shuttle catch body |02.

There is a further cam disc 23, Fig. 6, Whose groove |06 controls movement of the low'er end of two arm lever |01 to the upper end of which a rod |08 is pivoted. The left end of this rod is pivoted to bell crank lever |09 mounted on shaft |65. Link ||0 connects lever |09 with arm on shaft ||2 which is held in bearings ||4 and ||5, Fig. 2, of the side walls I6 and |1 of' the receiving mechanism casing 8. A shuttle push out lever I I3 is fixed to shaft |2, Figs. 2 and 3. The slide member support 6|" of pivot 60' of lever |01 is constructed as the previously described slide members 6| and 6|.

Two arm lever ||6 is actuated byv groove |25 in cam disc 24. A slide member 30" supporting pivot 29" of lever ||6 is constructed as are slide members 30 and 30. 'I'he movement of lever |6 is transmitted through a rod ||1, a bell crank lever ||8, which is rotatable on shaft |05, link |I9 and arm |20 to shaft I2I which is supported in bearings |22 and |23 on the side walls is and |1 of the catch mechanism box 8. A shuttle push out lock bar |24 is firmly connected with shaft |2|.

Drum 25, Fig. 2, is provided with a groove |26 which accommodates roller |21 of two arm lever |28 which swings about pivot |29. It is linked by member |30 to shuttle return member |3| which it moves reciprocatingly in guide |32, Figs. 2 and 7.

There is a second shuttle catch brake |35,

Fig. 7, consisting of a brake element |36 with brake plates |31 and extending upwardly as a threaded bolt |38 which is screwed in threaded bushing |39. This bushing' extends rotatably through stationary plate 50 and has a head |40 constructed as a conventional nut.

'I'he shuttles |4'have at their ends a thread gripper having two clip members |4| and |42 the stems |43, |44 of which extend into a longitudinal cavity in the shuttl'.. and can be seen through opening |45 which extends transverselythereto through the whole body of a shuttle, Fig. 2.

Finally, there is a return conveyor 9, Fig. 1, having a conveyor belt |46 provided with noses |41. The return conveyor 9 is laterally inclined and sliding on of the shuttles is prevented by a longitudinal guide rail |48. Figs. 8 and 9 to 13.

'I'he system operates as follows:

The shuttle |4 shot with great velocity ,through the shed is decelerated by the brakes 68 and |35 and comes to a standstill somewhere in the shuttle trap |02. Thereupon feeler 48 checks whether the shuttle has arrived or not. If no shuttle has arrived, the weaving machine is automatically stopped as will be described later. After arrival of a shuttle in the trap |02 the shuttle push back member |3| pushes the shuttle back to a predetermined position |50. Here, pin 85 is inserted into opening |45, Figs. 2 and 7, of the shuttle and fixes it in position |50. At the same time pin 85 forces the stems of members |4I, |42 apart and opens the thread gripper whereby the weft thread is released from the shuttle.

If the shuttle brakes 68, |35 are not properly adjusted it may happen that a shuttle is pushed out of trap |02 by member |3I. feeler 48, coming down once more, does not come to rest on a shuttle and this causes stoppage of the loom, as will be described later. If the shuttle is in its proper position |50, the brake element 69 is lifted and the push out rods 98, 39 push the shuttle into tunnel |49.

'I'he previously arrived shuttles |5I, |52 and |53 are already in tunnel |49, Figs. 9, and 11,=1-a`d jacent one-another. Shuttle |54 is already on conveyor belt |46. After it has been carried away the lock lever |24 is lifted and the push out lever H3 pushes the shuttles |52 and |53 downward until the shuttle |53 has reached the return conveyor belt |46. Thereupon the lock lever |24 comes down and positions the shuttle |53 properly on the return conveyor belt. It holds at the same time the next shuttle |52, Fig. 11, in a position parallel to the return conveyor belt |46 when the shuttle |53 is carried away on belt |46. The transferor push out rods v98, 99, Fig. ll, push the shuttle from position |50 into the transfer tunnel |49 to position |50' wherefrom it slips by gravity into the position of the shuttlel |5I. If necessary, the stroke of the transfer rods 88, 99 is increased.

The push out lever ||3 may be omitted, as shown in Figs. 12 and 13, In this case the pllh In this case the out rods 98, 99 push the shuttles |50 al1 the way down when lever |24 is lifted as in Fig. 13. This arrangement may be used in a weaving machine where the width of the fabric is not changed, i. e. in which the distance betweenthe picking mechanism 1 and the shuttle receiving mechanism 8 is permanently fixed.

If the distance between the picking mechanism 1 and the receiving mechanism 8 is changed for producing fabrics of different widths, the arrangement according to Figs. l2-and 13 is sometimes not satisfactory. lWhen changing this distance the timing of the shuttle push out operation must be changed too and it may happen that the movements of the push out rods 98, 99

cannot be brought in agreement with the movement of the return conveyor belt |46. For taking care of this, the movement of the shuttles in the transfer tunnels |49 is supplementarily controlled by lever ||3 whereby the timing of the transfer of the shuttle from the discharge end of tunnel |43 to the return conveyor belt can be suitably adjusted. This adjustment can be effected by changing the angular position of cam discs 23 and 24 on shaft I8 which cams actuate the push out lever ||3 and lock lever |24. g

vThe braking force of the brakes 68 and |35 can be adjusted by-turning the nuts 11 and |40 whereby the brake elements 69 and |36 are moved up or down.

Lifting of the brake element 69 at the moment the shuttle |50 is removed from the trap |02 is effected by collapsing of toggle joint 58, 50 by means of rod 51.

If the brake element 60, when the joint 58, 59 is extended, should strike an incorrectly transferred shuttle |50, the bolt 86 becomes the fulcrum of double lever 55, as its normal pivot 60 can move with slide member 6| against the action of spring 3|. Thereby the ball 64 and rod 66 are pressed down and the latter against lever 43 which rotates shaft 44. The latter causes stopping of the weaving machines in conventional manner.

For feeling the shuttle which has arrived in trap |82 rod 46 moves to the right and the nose in the eye of feeler 48 slides down under the inuence of spring 52 on the sloped surface |56 of the inner notch on the head 41 of rod 46,

. Figs. 3 and 4. If there is a shuttle in the trap,

rod 46 can continue its reciprocating movement indicated by arrows 45 to the right because feeler 48 rests on the shuttle and nose 55 cannot go deeper than the edge between the notches on the head 41. If there is no shuttle in the trap the feeler rides all the way down on surface |56 till nose |51 of the head 41 abuts nose |55 of the feeler and prevents movement of rod 46 ,to the right. Then bolt 81 becomes fulcrum of lever 28 and its normal pivot 29 is displaced with the slide member 30 against the action of spring 3| whereby ball 34 presses rod 35 down. This downward movement of rod 35 is transferred via bell crank lever 39 to rod 40 and therefrom to control 'feeler 48 drops into notch |58, because, at that time, rod 46 has moved further to the right. Continuation of movement to the right of rod 46 is thereby prevented and the loom is stopped as described in the paragraph next above.

accepte Should the -pin 85 which derives its up and down movement from groove 19 in cam disc 2i, hit a shuttle body instead of being inserted into hole |45 of the shuttle, completion of the down stroke of the pin is prevented. This causes bolt 8l', Fig. 5, to become temporarily the pivot of two arm lever 'i8 whereby the loom is stopped in the same way as described in reference to levers 2S or 55.

If the shuttle push out rods 96,' 99 cannot complete their push out strokes, bolt 86' becomes temporarily fulcrum of lever 86 and the loom is stopped through displacement of slide member 6|'.

If push outlook lever i24 and, or push out lever ||v3 is prevented to complete its movement the bolts 8l or 86 become temporary fulcrums of their levers ||6, I?, respectively, and displacement of the slide member 30" or 6| causes stoppage of the loom.

In the modification of the shuttle transfer mechanism illustrated in Figs. 14 to 17 the push out lever |13' and the push out lock lever |126 swing about the same axis. In this case the shuttles move on a quarter circle from the picking axis |03 to return conveyor s and the shuttles are placed with their small side on the belt |43, which, in this case, is not inclined laterally. Lateral sliding of the shuttles is prevented by lateral guides |68'. Member im' prevents, as member |24, premature sliding down of the following shuttle in the channel |139' and places the shuttles in correct position on the conveyor before being carried away.

Lever H3" is mounted on a tube 662 and actuated thereby. Shaft |2i is displaced within said tube and actuates lever 82d'. Shafts 52|] and tube |62 are actuated as illustrated in Fig. 17 and similarly as in the previously described modication.

Instead of the tunnel |139 being shaped out of a full piece the transfer means may comprise two or more plates or sheets |60, Figs. 18-20, distributed over the length of the shuttle l@ and arranged perpendicularly to the axis of the shuttle, provided with slots |6| to guide the shuttles from the receiving mechanism to the conveyor. Such a design has the advantage to be cheaper. If, however, a closed tunnel is necessary covering sheets |62, |63 may be arranged between and beyond the guiding sheets |60. These covering sheets |62, |63 are fixed by copper-soldering, welding or otherwise to the guiding sheets |60 at or near the edges of the slots IBI. At its sides the tunnel is closed by a cover |64.

While I believe the above described embodiments of my invention to be preferred embodiments, I vrish it to be understood that I do not desire to bo limited to the exact details of method, design and construction shown and described, for obvious modifications will occur to a person skilled in the art.

` I claim:

l. In a loom for weaving of the type having spoolless shuttles, a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanism comprising shuttle transfer means for transferring the shuttles to said return conveyor, said transfer means including shuttle passage means and shuttle moving means positively moving a plurality of shuttles at the same time through said passage means.

2. In a. loom for weaving of the type having spoolless shuttles, a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanism comprising shuttle transfer means for transferring the shuttles to said return conveyor, said transfer means including a closed transfer passage means adapted to hold and pass a plurality of shuttles at the same time.

3. In a loom for weaving of the type having spoolless shuttles, a shuttle picking mechanism, a shuttle receivingmechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanism comprising shuttle brake means, shuttle passage means for passing the shuttles from said brake means to said return conveyor and having a shuttle entry portion extending substantially rectangularly to the direction of movement of the shuttles in said brake means, and shuttle push back means pushing the shuttles, after they have been stopped by said brake means, back to said entry portion.

4. In a loom for weaving of the type having spoolless shuttles, a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanism comprising shuttle transfer means for transferring the shuttles to said return conveyor, said transfer means including shuttle passage means having a shuttle entry portion, shuttle fixing means fixing individual shuttles at said entry portion, and shuttle moving means adapted to simultaneously move a plurality of shuttles through said passage means.

5. In a loom for weaving of the type having spoolless shuttles, a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanism comprising shuttle brake means, a shuttle passage meansr passing the shuttles from said brake means to said return conveyor and having a shuttle entry portion, shuttle push back means pushing the shuttles from where they come to a standstill in said brake means back to adjacent said entry portion, shuttle fixing means xing individual shuttles at said entry portion, said shuttles having normally closed weft grippers, and said fixing means comprising opener means opening said grippers when they x a shuttle;

6. In a loom for weaving of the type having spoolless-shuttles, a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanism comprising shuttle feeler means contacting and thereby checking the presence of a shuttle in said receiving mechanism, and shuttle transfer means for transferring the shuttles to said return conveyor, said transfer means including shuttle passage means and shuttle moving means positively mov-l ing a plurality of shuttles at the s ame time through said pasage means.

7. In a loom for weaving of the type having spoolless shuttles, loom drive means, shuttle brake means, shuttle passage means passing the shuttles from said brake means to said return conveyor and having a shuttle entry portion, shuttle push back means pushing the shuttles from where they come to a standstill in said brake means back to adjacent said entry portion, shuttle fixing means fixing individual shuttles at said entry portion, shuttle moving means moving a plurality of shuttles simultaneously through said passage means, and a plurality of cam means connected to and driven by said drive means, said push back means, said fixing means, and said moving means individually comprising mechanisms individually connected with said cam means and being actuated thereby. 8. In a loom as defined in claim 7, an auxiliary shaft connected to and rotated by said drive means, said cam means being fixed on said shaft. 9. In a loom as defined in claim 7, loom stop actuating means, said last mentioned mechanisms individually comprising yielding means,

yielding upon an improper operating condition of said mechanisms and connected with and actuating said actuating means.

10. In a loom for weaving of the type havingA spoolless shuttles, loom drive means, a shuttle picking mechanism,a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism. said shuttle receiving mechanism comprising shuttle feeler means contacting and thereby checking the presence of a shuttle in said receiving mechanism, and shuttle transfer means for transferring theshuttles to said return conveyor, said transfer means including shuttle passage means and shuttle moving means positively moving a plurality of shuttles at the Same time through said passage means, cam means connected to and operated by said drive means, and a mechanism interconnecting said feeler means and said cam means and comprising locking means locking said mechanism when said feeler means does not contact a shuttle, said mechanism comprising yielding means yielding when said mechanism is locked, and loom stop actuating means connected with said yielding means and being actuated thereby.

11. In a loom for weaving of the type having spoolless shuttles, a shuttle picking mechanism, a shuttle receiving mechanism, -a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanism comprising two shuttle brakes and shuttle transfer means for transferring the shuttles to said return conveyor, said transfer means including shuttle passage means extending laterally from one of said brakes, and shuttle moving means individually moving the shuttles from said brake into said passage means.

12. In a loom as specified in claim 1l, said brakes individually comprising removable and yielding brake lining means.

13. In a loom as specified in claim 11, said brakes individualy comprising a plurality of removable steel brake plates.

14. In a loom as specified in claim 11, said brakes individually comprising removable brake lining means made of yielding oil proof rubber.

15. In a loom -for weaving of the type having spoolless shuttles, a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttlev receiving mechanism comprising a positively actuated brake, and shuttle transfer means for transferring the shuttles to said return conveyor, said transfer means including l0 shuttle transfer tunnel means extending laterally from said brake, and shuttlemoving means individually moving the shuttles from said brake into said tunnel means.

16. In a loom for weaving of the type having spoolless shuttles, a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanism comprising shuttle brake means comprising brake applying and releasing means, shuttle passage means for passing the shuttles from said brake means to said return conveyor and having a shuttle entry portion adjacent said brake means, shuttle push I back means pushing the shuttles, after they have come to a standstill in said receiving meansdue to the action of said brake means, back to said entry portion, shuttle moving means moving the shuttles into said entry portion of said passage means, and an actuating mechanism connected with said applying and releasingfmeans and said push back means and releasing said brakemeans upon actuation of said push back means.

' 17. In a loom for weaving o f the type having spoolless shuttles, a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism. said shuttle receiving mechanism comprising shuttle brake means and shuttle transfer means for transferring the shuttles to said return conveyor. said transfer means including shuttle' passage means and shuttle moving means positively moving a plurality of shuttles at the same time through said passage means, said shuttle brake means comprising a reciprocatingly movable brake member, a stationary part, and a toggle joint interconnecting said member and said part, said brake member being applied when said joint is straightened and being released when said joint is collapsed.

18. In a loom for weaving of the type having spoolless shuttles, loom drive means, a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving'mechanism comprising shuttle brake means and shuttle transfer means for transferring the shuttles to said return conveyor, said transfer means including shuttle passage means and shuttle moving means positively moving a plurality of shuttles at the same time through said passage means, said shuttle brake means comprising a reciprocatingly movable brake member, a stationary part, and a toggle joint interconnecting said member and said part, said brake member being applied when said joint is straightened and being released when said joint is collapsed, and an. actuating mechanism connected with said toggle joint and comprising cam means connected to and driven by said drive means.

19. In a loom for weaving of the type having spoolless shuttles. a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanism comprising a shuttle receiving tunnel, a shuttle transfer tunnel branching substantially rectangularly from said receiving tunnel and continuing in a downward curve and then in a curve counter to said rst curve laterally to said conveyor, and shuttle moving means moving said shuttles sideways from said receiving tunnel into said transfer tunnel.

2G. In a loom for weaving of the type having spoolless shuttles, a shuttle picking mechanism,v a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to 'the picking mechanism, said shuttle receiving mechanism comprising a shuttle receiving tunnel, a shuttle transfer tunnel branching from said receiving tunnel and continuing downward in a quarter circle curve to above said conveyor, and shuttle moving means moving said shuttles sideways from said receiving tunnel into said transfer tunnel.

21. In a loom for weaving of the type having spoolless shuttles, a shuttle vpicking mechanism, a shuttle receiving mechanism, a shuttle return conveyor` transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanism comprising a shuttle receiving tunnel, a shuttle transfer tunnel extending laterally from said receiving tunnel and downward to said conveyor, shuttle moving means moving said shuttles individually and sideways from said receiving tunnel into and packing them side by side in said transfer tunnel, and a shuttle push out arm having a free end extending periodically into said transfer tunnel and pushing a shuttle toward said conveyor.

22. In a loom for weaving of 'the type having t spoolless shuttles, a shuttle picking mechanism,

a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanism comprising a shuttle receiving tunnel, a shuttle transfer vtun'- nel extending laterally from said receiving tunnel and having a shuttle discharge portion adjacent said conveyor, shuttle moving means moving said shuttles individually and sideways from said receiving tunnel into and packing them side by side in said transfer tunnel, and a shuttle positioning and locking lever having a free end swinging periodically between said discharge portion and said conveyor and positioning a shuttle on said conveyor and locking the following shuttles in said transfer tunnel.

23. In a loom for weaving of the type having spoolless shuttles, a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanism comprising a shuttle receiving tunnel, a shuttle transfer tunnel extending laterally from said receiving tunnel and downward to said conveyor, shuttle moving means moving said shuttles individually and sideways from said receiving tunnel into and packing them side by side in said transfer tunnel, a shuttle push out arm having a free end extending periodically into said transfer tunnel and pushing a shuttle toward said conveyor, and an actuating mechanism connected to and actuating said moving means ,and said push out arm and including timing means timing the actuation of said moving means and push out arm so that said push out arm commences to push a shuttle to the conveyor after` said moving means has ilnishedmoving a shuttle into said transfer tunnel.

24. In a loom for weaving of the type having spoolless shuttles, a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism,

said shuttle receiving mechanism comprising a shuttle receiving tunnel. a shuttle transfer tun' pushing a shuttle toward said conveyor, and an actuating mechanism connected to and actuating said moving means and said push out arm and including timing means timing the actuation of said moving means and push out arm so that said moving means commences moving a shuttle into the transfer tunnel after the free end of said push out arm has left the transfer tunnel.

25. In a loom for weaving of the type having spoolless shuttles, a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanismcomprising a shuttle receiving tunnel, a shuttle transfer tunnel extending laterally from said receiving tunnel and having a shuttle discharge portion adjacent said conveyor, shuttle moving means moving said shuttles individually and sideways from said receiving tunnel into and packing them side by side in said transfer tunnel, and a shuttle locking lever having a free end swinging periodically between said discharge portion and said conveyor and locking the shuttles in said transfer tunnel when a shuttle ,is carried away by said conveyor and swinging out of the shuttle path and releasing the shuttles for moving to l said conveyor.

26. In a loom for weaving of the type having spoolless shuttles, loom drive means, a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanism comprising a shuttle receiving tunnel, a shuttle transfer tunnel extending laterally from said receiving tunnel to said conveyor, shuttle moving means extending periodically into said receiving tunnel and moving a shuttle sideways from said receiving tunnel into said trans- A fer tunnel, said picking means being connected l to and driven by said loom drive means, a mechanism connecting said drive means and said shuttle moving means and comprising timing means holding said shuttle moving means outside said receiving tunnel when a shuttle is picked.

27. In a loom for weaving of the type having spoolless shuttles, loom drive means, a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the 13 a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanism comprising a shuttle receiving tunnel, a shuttle transfer tunnel extending laterally from said receiving tunnel to said conveyor, shuttle moving means moving said shuttles individually and sideways from said receiving tunnel into and packing them side by side in said transfer tunnel, a shuttle push out arm having a free end extending periodically into said transfer tunnel and pushing a shuttle toward said conveyor, and an actuating mechanism connected to and actuating said moving means and said push out arm and including adjustable timing means for adjusting the relative timing of the actuation of said moving means and push out arm.

29. In a loom for weaving of the type having spoolless shuttles, loom drive means, a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanism comprising shuttle brake means comprising brake applying and release means, shuttle passage means for passing the shuttles from said brake means to said return conveyor, shuttle moving means moving the shuttles through said passage means, an actuating mechanism connected with said loom drive means, and connecting means individually connecting said brake applying and release means and said shuttle moving means with said mechanism and comprising yielding means yielding upon an improper operation of said brake applying and release means and of said shuttle moving means.

30. In a loom for weaving of the type having spoolless shuttles, a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanism comprising shuttle transfer means for transferring the 14 shuttles to said return conveyor, this means being adapted to store two or more shuttles.

3l. In a loom for weaving of the type having spoolless shuttles, a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanism comprising shuttle transfer means for transferring the shuttles to said return conveyor, this means including a transfer path being so arranged that the shuttles slide along the path on the larger side of their cross section.

32. In a loom for weaving of the type having spoolless shuttles, a shuttle picking mechanism, a shuttle receiving mechanism, a shuttle return conveyor transporting the shuttles from the receiving mechanism to the picking mechanism, said shuttle receiving mechanism comprising shuttle transfer means for transferring the shuttles to said return conveyor, this means comprising two or more plates arranged perpendiculariy to the axis of the shuttles and provided with slots in a manner to guide the shuttles from the receiving mechanism to the conveyor.

33, In a loom as defined in claim 32 covering plates are situated between and beyond the guidingplates and fixed to the latter at or near the edges of the slots to form a closed transfer channel.

ERWIN PFARRWALLER.

REFERENCES CITED The following references are of record in the i'lle of this patent:

UNITED STATES PATENTS Number Name Date 2,099,627 Rossmann Nov. 16, 1937 2,420,380 Moessinger May 13, 1947 OTHER REFERENCES Canadian Textile J ournal. June 23, 194B. pages 

